Structurally embedded lighting for display panels

ABSTRACT

An embedded light source in a composite panel. A first electrode and a second electrode are associated with a first layer of material. A light source is positioned in electrical communication with the first electrode and the second electrode. An assembly comprising the first layer of material, the first electrode, the second electrode, and the light source is processed to form a multilayer panel with an embedded light source.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is a divisional of U.S. patent application Ser. No.14/707,652, filed May 8, 2015, now U.S. Pat. No. 10,099,800, thedisclosure of which is incorporated by reference herein in its entirety.

BACKGROUND INFORMATION 1. Field

The present disclosure relates generally to interior lighting anddisplay panels. More particularly, the present disclosure relates tocomposite interior panels. The present disclosure relates still moreparticularly to methods and apparatuses for embedding a light source ina composite panel.

2. Background

Commercial airlines typically provide in-flight entertainment, safetynotices, and other valuable information in the passenger cabin usingstatic or programmable displays. Conventional static and programmabledisplays may include retractable display screens, passenger serviceunits, display screens mounted in seat backs, or permanent placards.Static displays may only display a single image. As an example, aconventional backlit fasten seat belt sign in a commercial aircraft maybe considered a static display. Programmable displays may be used todisplay a variety of images. For example, a retractable display screenin an aircraft that displays safety videos and in-flight entertainmentmay be considered a programmable display.

Conventional static and programmable displays on commercial aircraft maybe undesirable in at least one of weight, bulk, number, efficiency, orconnection complexity. For example, connecting a fasten seat belt signmay add manufacturing steps and time. Also, the fasten seat belt signassembly may add weight to the aircraft. Connections and wiring for thefasten seat belt sign may also be more complex or heavier than desired.The bulk of a fasten seat belt sign assembly may be undesirable and mayuse additional fastening means for securing the fasten seat belt signassembly.

Seat labeling and other location-flexible placards are currently notilluminated. It may be difficult to view the content of the placardsunder some lighting conditions or for some passengers.

Therefore, it would be desirable to have a method and apparatus thattake into account at least some of the issues discussed above, as wellas other possible issues. One issue may be to reduce the bulk or weightof a display. Another issue may be to reduce or eliminate additionalmanufacturing steps for installing displays. A further issue may be toprovide a cost efficient and weight efficient method of providingilluminated placards for conventionally non-illuminated placards.

SUMMARY

An illustrative example of the present disclosure provides a method. Afirst electrode and a second electrode are associated with a first layerof material. A light source is positioned in electrical communicationwith the first electrode and the second electrode. An assemblycomprising the first layer of material, the first electrode, the secondelectrode, and the light source is processed to form a multilayer panelwith an embedded light source.

Another illustrative example of the present disclosure provides amultilayer panel with an embedded light source. The multilayer panelcomprises a first electrode, a second electrode, a light source, and asecond layer of material. The first electrode is associated with a firstlayer of material. The second electrode is associated with the firstlayer of material. The light source is in electrical communication withthe first electrode and the second electrode. The second layer ofmaterial is overlying the first layer of material and the light source.

A further illustrative example of the present disclosure provides anaircraft. The aircraft comprises a multilayer panel with an embeddedlight source and a controller. The multilayer panel comprises a firstelectrode associated with a first layer of material, a second electrodeassociated with the first layer of material, a light source inelectrical communication with the first electrode and the secondelectrode, and a second layer of material overlying the first layer ofmaterial and the light source. The controller is in communication withthe light source.

A yet further illustrative example of the present disclosure provides amultilayer panel with an embedded light source. The multilayer panelwith the embedded light source comprises a first layer of compositematerial, a light source, and a second layer of composite material. Thelight source is positioned relative to the first layer of compositematerial. The second layer of composite material overlies the firstlayer of composite material and the light source.

The features and functions can be achieved independently in variousexamples of the present disclosure or may be combined in yet otherexamples in which further details can be seen with reference to thefollowing description and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The novel features believed characteristic of the illustrative examplesare set forth in the appended claims. The illustrative examples,however, as well as a preferred mode of use, further objectives andfeatures thereof, will best be understood by reference to the followingdetailed description of an illustrative example of the presentdisclosure when read in conjunction with the accompanying drawings,wherein:

FIG. 1 is an illustration of an aircraft in accordance with anillustrative example;

FIG. 2 is an illustration of a block diagram of a manufacturingenvironment in accordance with an illustrative example;

FIG. 3 is an illustration of an exploded view of an embedded lightsource in accordance with an illustrative example;

FIG. 4 is an illustration of a shim and a first layer of material inaccordance with an illustrative example;

FIG. 5 is an illustration of a layup including a shim being insertedinto a press in accordance with an illustrative example;

FIG. 6 is an illustration of a cured composite panel with a depressionin accordance with an illustrative example;

FIG. 7 is an illustration of a light source inserted into a depressionin a cured composite panel in accordance with an illustrative example;

FIG. 8 is an illustration of an exploded view of one implementation of alayup with a light source in accordance with an illustrative example;

FIG. 9 is an illustration of an exploded view of one implementation of alayup with a light source in accordance with an illustrative example;

FIG. 10 is an illustration of an embedded light source in a multilayerpanel in accordance with an illustrative example;

FIG. 11 is an illustration of an illuminated embedded light source in amultilayer panel in accordance with an illustrative example;

FIG. 12 is an illustration of a flowchart of a process for forming amultilayer panel with an embedded light source in accordance with anillustrative example;

FIG. 13 is an illustration of a block diagram of an aircraftmanufacturing and service method in accordance with an illustrativeexample; and

FIG. 14 is an illustration of a block diagram of an aircraft in which anillustrative example may be implemented.

DETAILED DESCRIPTION

With reference now to the figures, and in particular, with reference toFIG. 1, an illustration of an aircraft is depicted in accordance with anillustrative example. In this illustrative example, aircraft 100 haswing 102 and wing 104 attached to body 106. Body 106 may also bereferred to as a fuselage. Aircraft 100 includes engine 108 attached towing 102 and engine 110 attached to wing 104.

Body 106 has tail section 112. Horizontal stabilizer 114, horizontalstabilizer 116, and vertical stabilizer 118 are attached to tail section112 of body 106. Body 106 also has cockpit 120 and passenger cabin 122.In this example, passenger cabin 122 may include passenger seating inseating area 124. Passenger seating may include a number of aircraftseats. As used herein, a “number of” items means one or more items. Forexample, a number of aircraft seats means one or more aircraft seats.

Further, seating area 124 in passenger cabin 122 may also includestorage areas, such as a number of overhead stowage bins. Passengercabin 122 also may include lavatory 126 and galley area 128. These twoareas may be partitioned or separated from seating area 124 by apartitioning structure such as, for example, without limitation, a wall,a partition, a class divider, a lavatory, a galley, a curtain, a stairenclosure, or a bar unit.

Also, other areas may be present in addition to seating area 124,lavatory 126, and galley area 128. Other areas may include, for example,without limitation, closets, storage areas, lounges, and other suitableareas for passenger seating. As another example, airplane seats withinseating area 124 may be arranged differently from the depicted example.In other illustrative examples, some seats may be grouped into sets ofsingle seats instead of three seats or pairs of seats as is illustratedin seating area 124.

Aircraft 100 is an example of an aircraft having components which may bemanufactured in accordance with an illustrative example. For example,passenger cabin 122 of body 106 of aircraft 100 may include embeddedlight sources in composite panels. As one example, an embedded lightsource in a composite panel inside body 106 of aircraft 100 may includeat least one of cabin lighting, décor, advertising, emergency signage,emergency lighting, entertainment displays, seat placards, safetysignage, or another desirable type of display. As used herein, thephrase “at least one of,” when used with a list of items, meansdifferent combinations of one or more of the listed items may be usedand only one of each item in the list may be needed. For example, “atleast one of item A, item B, or item C” may include, without limitation,item A, item A and item B, or item B. This example also may include itemA, item B, and item C or item B and item C. Of course, any combinationsof these items may be present. In other examples, “at least one of” maybe, for example, without limitation, two of item A; one of item B; andten of item C; four of item B and seven of item C; or other suitablecombinations. The item may be a particular object, thing, or a category.In other words, at least one of means any combination items and numberof items may be used from the list but not all of the items in the listare required.

This illustration of aircraft 100 is provided for purposes ofillustrating one environment in which the different illustrativeexamples may be implemented. The illustration of aircraft 100 in FIG. 1is not meant to imply architectural limitations as to the manner inwhich different illustrative examples may be implemented. For example,aircraft 100 is shown as a commercial passenger aircraft. The differentillustrative examples may be applied to other types of aircraft, such asa private passenger aircraft, a military aircraft, a rotorcraft, andother suitable types of aircraft. For example, an illustration of ablock diagram of aircraft 1400 is depicted in FIG. 14.

Although the illustrative examples for an illustrative example aredescribed with respect to an aircraft, the illustrative example may beapplied to other types of platforms. The platform may be, for example, amobile platform, a stationary platform, a land-based structure, anaquatic-based structure, and a space-based structure. More specifically,the platform may be a surface ship, a tank, a personnel carrier, atrain, a spacecraft, a space station, a satellite, a submarine, anautomobile, and other suitable platforms.

In some illustrative examples, stationary platform may include any typeof desirable building. For example, a stationary platform may take theform of a school, a hospital, a museum, an exhibition hall, or any otherdesirable type of building. For example, an embedded light source in acomposite panel may be used for a display or lighting. When not in use,the embedded light source may not be detectable. As a result, anembedded light source in a composite panel may be used to form walls,ceilings, partitions, or any desirable portion of a building.

The embedded light source in a composite panel may be manufactured as anoriginal component of a platform. In some illustrative examples, thecomposite panel may be a replacement or retrofitted component of aplatform. For example, a composite panel in aircraft 100 without anembedded light source may be replaced with an embedded light source in acomposite panel. In some illustrative examples, all or a portion of awall of a building may be replaced with an embedded light source in acomposite panel.

Although the illustrative examples are described with respect to aplatform, the embedded light source in a composite panel need not bephysically attached to a platform. In some illustrative examples, anembedded light source in a composite panel may be used as a portabledisplay or portable lighting. As a result, a user may bring an embeddedlight source in a composite panel from platform to platform. In someillustrative examples, the embedded light source in the composite panelmay be used as a display board, an easel, or other type of display. Insome illustrative examples, the embedded light source in a compositepanel may be used to form furniture, free-standing lighting fixtures,wired lighting fixtures, or other desirable movable components in aplatform.

Turning now to FIG. 2, an illustration of a block diagram of amanufacturing environment is depicted in accordance with an illustrativeexample. Manufacturing environment 200 may be used to manufacturemultilayer panel 202 of aircraft 203. Aircraft 100 of FIG. 1 may be aphysical implementation of aircraft 203 of FIG. 2.

Multilayer panel 202 includes number of layers 204. In some illustrativeexamples, number of layers 204 includes number of composite layers 205.Number of composite layers 205 is formed of a number of compositematerials.

In these illustrative examples, multilayer panel 202 may also be calleda composite panel. Composite materials may be tough, light-weightmaterials created by combining two or more functional components. Forexample, a composite material may include reinforcing fibers bound in apolymer resin matrix. Resins used in composite materials may includethermoplastic or thermoset resins. A thermoplastic material may becomesoft upon heating and may harden upon cooling. A thermoplastic materialmay be able to be repeatedly heated and cooled. A thermoset material maybecome hard when heated. The fibers may be unidirectional or may takethe form of a woven cloth or fabric.

Multilayer panel 202 may have any desirable characteristic such as size,shape, flexibility, or other characteristics. Multilayer panel 202 mayhave any desirable shape. For example, multilayer panel 202 may beportions of aircraft 203 that are substantially planar or have a numberof curves or contours. In some illustrative examples, multilayer panel202 may have a non-planar curvature. Multilayer panel 202 may be rigidor flexible.

Multilayer panel 202 includes embedded light source 206. Multilayerpanel 202 with embedded light source 206 may be formed by processingassembly 207. Embedded light source 206 is a structure that emits light.Embedded light source 206 may be any desirable type of light emissivestructure. In some illustrative examples, embedded light source 206 mayhave a number of pixels. Embedded light source 206 may be formed byembedding light source 208 within number of layers 204. Embedded lightsource 206 may be used for at least one of cabin lighting 209, décor210, advertising 212, emergency signage 214, emergency lighting 216,entertainment display 218, seat placards 220, safety signage 222, orother desirable types of displays or lighting in aircraft 203.

In illustrative examples in which embedded light source 206 inmultilayer panel 202 is used for at least one of cabin lighting 209,emergency lighting 216, or other types of lighting, multilayer panel 202may be referred to as an embedded lighting panel. In illustrativeexamples in which embedded light source 206 in multilayer panel 202 isused for at least one of décor 210, advertising 212, emergency signage214, entertainment display 218, seat placards 220, safety signage 222,or other desirable types of displays multilayer panel 202 may bereferred to as an embedded display panel.

Embedded light source 206 may be positioned between first layer ofmaterial 223 and second layer of material 224. In some illustrativeexamples, first layer of material 223 and second layer of material 224are processed together to form multilayer panel 202. In anotherillustrative example, embedded light source 206 may be positioned indepression 225 within number of layers 204 and covered with laminate226. In this illustrative example, second layer of material 224 takesthe form of laminate 226 and is adhered to first layer of material 223.In this illustrative example, second layer of material 224 is a laminatelayer. In this illustrative example, laminate 226 may not receive thesame processing as first layer of material 223.

Laminate 226 may provide desired functionality to multilayer panel 202.For example, laminate 226 may provide a desired aesthetic appearance, UVresistance, fire-worthiness, protection from mechanical damages,chemical protection from chemicals, or other desirable functions tomultilayer panel 202. In some illustrative examples, laminate 226 may bea decorative laminate.

In this illustrative example, embedded light source 206 may be describedas an inlay. However, embedded light source 206 may not necessarily becompletely flush with first layer of material 223.

Embedded light source 206 may take the form of any desired embeddedlight source. In some illustrative examples, embedded light source 206may take the form of organic light emitting diode 228. Organic lightemitting diode 228 may be at least one of more energy efficient,lighter, or thinner than conventional display assemblies. Further,organic light emitting diode 228 may emit light across substantially thewhole surface of organic light emitting diode 228. In other illustrativeexamples, embedded light source 206 may take the form ofelectroluminescent (EL) structures, flexible light emitting diodes(LED), or other desirable emissive structures.

Light source 208 may be flexible 230. By being flexible 230, lightsource 208 may bend and flex with multilayer panel 202. Further, lightsource 208 may be processed to form multilayer panel 202. In someillustrative examples, light source 208 may be programmable 232. Inthese examples, light source 208 may be used for multiple purposes. Inother examples, light source 208 may display different images for asingle purpose. In some illustrative examples, light source 208 may bestatic image 234. In these examples, light source 208 may be used for asingle purpose and may only show a single image.

When light source 208 takes the form of organic light emitting diode 228and is flexible 230 and programmable 232, it may be referred to as aprogrammable flexible organic light emitting diode. When light source208 takes the form of organic light emitting diode 228 and is flexible230 with static image 234 it may be referred to as a static imageflexible organic light emitting diode.

To form multilayer panel 202, number of electrodes 236 may be associatedwith first layer of material 223. In some illustrative examples, numberof electrodes 236 may be associated with first layer of material 223 bypositioning number of electrodes 236 relative to first layer of material223. First electrode 238 may first be associated with first layer ofmaterial 223. Second electrode 240 may also be associated with firstlayer of material 223. At least one of first electrode 238 and secondelectrode 240 may be adhered to first layer of material 223. In someillustrative examples, at least one of first electrode 238 and secondelectrode 240 is free to move relative to first layer of material 223.In some illustrative examples, only one of first electrode 238 andsecond electrode 240 is affixed to first layer of material 223.

In some illustrative examples, by having at least one of first electrode238 and second electrode 240 free to move relative to first layer ofmaterial 223, inconsistencies may be reduced in the resulting multilayerpanel 202. For example, by having at least one of first electrode 238and second electrode 240 free to move relative to first layer ofmaterial 223, delamination in multilayer panel 202 may be reduced orprevented.

Number of electrodes 236 may take the form of at least one of conductivetape 242, printed 244, integrated 246, direct write 248, or any otherdesirable type of electrodes. Conductive tape 242 may be formed ofcopper 250. When an electrode in number of electrodes 236 is printed244, it may be formed using a three-dimensional printer or otherdesirable type of printer. When an electrode in number of electrodes 236is integrated 246, the electrode may comprise conductive material withina layer of number of layers 204. When an electrode in number ofelectrodes 236 is conductive tape 242, conductive tape 242 may beassociated with first layer of material 223 by conductive adhesive 252of number of adhesives 253.

Light source 208 is positioned in electrical communication with firstelectrode 238 and second electrode 240. When light source 208 is inelectrical communication with first electrode 238 and second electrode240, light source 208 is capable of receiving or transmitting electricalsignals via at least one of first electrode 238 or second electrode 240.In some illustrative examples, embedded light source 206 may beconnected to at least one of first electrode 238 and second electrode240 by bond 254. Bond 254 may be formed using at least one of solder256, conductive paste 258, or some other desirable bond.

In some illustrative examples, first layer of material 223 may be firstcomposite layer 260. In some illustrative examples, when first layer ofmaterial 223 is first composite layer 260, light source 208 may bepositioned in electrical communication with first electrode 238 andsecond electrode 240 prior to curing first composite layer 260. In theseillustrative examples, second layer of material 224 may be secondcomposite layer 262. Second composite layer 262 may be placed over lightsource 208, first electrode 238, second electrode 240, and firstcomposite layer 260.

Layup 263 may be processed to form all, or part, of multilayer panel202. Layup 263 may be a stack of an unprocessed number of materials. Forexample, layup 263 may include number of electrodes 236 and firstcomposite layer 260. As another example, layup 263 may include number oflayers 204. In some illustrative examples, layup 263 may include numberof layers 204 and embedded light source 206. In some illustrativeexamples, portions of layup 263 may also receive surface treatment 264.Surface treatment 264 may aid in adhering materials. For example,surface treatment 264 may aid in adhering thermoplastics, thermosets,metals, or other types of materials. Surface treatment 264 may reduce orprevent inconsistencies in the resulting multilayer panel 202. Forexample, by having surface treatment 264, delamination in multilayerpanel 202 may be reduced or prevented. Surface treatment 264 may includeat least one of chemical treatment, thermal treatment, mechanicaltreatment, or any other desirable type of treatment. In someillustrative examples, surface treatment 264 may include at least one ofcorona treatment, plasma treatment, or flame treatment.

In the above illustrative example, placing second composite layer 262over light source 208, first electrode 238, second electrode 240, andfirst composite layer 260 forms layup 263. Afterwards, layup 263including embedded light source 206, first composite layer 260, andsecond composite layer 262 are processed to cure first composite layer260 and second composite layer 262.

Layup 263 may be processed using at least one of curing equipment 265 orprocessing materials 266. Processing materials 266 may include number ofcaul sheets 267, release material 268, texture 270, or number of shims272. Layup 263 may be placed between number of caul sheets 267 and layup263 may be placed into curing equipment 265. Release material 268 may bepositioned between number of caul sheets 267 and layup 263. In someillustrative examples, texture 270 may be positioned between a layer ofrelease material 268 and layup 263. Texture 270 may change the exteriortexture of layup 263. In some illustrative examples, release material268 may be parchment 273. In some illustrative examples, curingequipment 265 may take the form of one of multiple opening press 274,autoclave 276, press 278, or other desirable form of equipment.

In some illustrative examples, number of shims 272 may be positionedwithin layup 263 prior to curing number of composite layers 205. In someillustrative examples, number of shims 272 may be positioned withinprocessing materials 266 relative to layup 263 prior to curing number ofcomposite layers 205. For example, number of shims 272 may be positionedadjacent to layup 263 within release material 268.

In illustrative examples in which second composite layer 262 is withinlayup 263, when embedded light source 206 is illuminated, the lighttravels through second composite layer 262. The light also travelsthrough any additional layers positioned over second composite layer262. In these illustrative examples, second composite layer 262 hasdesirable transmission properties such that embedded light source 206 isvisible through second composite layer 262 when illuminated.

When embedded light source 206 is processed with number of layers 204,multilayer panel 202 may have a substantially consistent surface. As aresult of the substantially consistent surface, embedded light source206 may not be detected within multilayer panel when embedded lightsource 206 is not illuminated.

When layup 263 includes embedded light source 206, embedded light source206 will experience temperatures and pressures applied to number oflayers 204 to cure number of composite layers 205. The materials ofnumber of layers 204 may be selected such that processing does notdamage embedded light source 206. In some illustrative examples,multilayer panel 202 may be a pre-existing product layup. Multilayerpanel 202 may be selected to include embedded light source 206 based onpre-existing processing parameters for the materials of multilayer panel202.

In some illustrative examples, embedded light source 206 may not beexposed to processing temperatures or pressures. In these illustrativeexamples, first layer of material 223 of number of layers 204 may beprocessed prior to incorporating embedded light source 206. For example,number of shims 272 may be placed relative to first composite layer 260to form layup 263. Afterwards, layup 263 including first composite layer260 and number of shims 272 is processed to cure first composite layer260. Curing layup 263 forms cured panel 279. Cured panel 279 hasdepression 225 formed by number of shims 272.

Light source 208 may then be electrically associated with firstelectrode 238 and second electrode 240 on cured panel 279. After placinglight source 208 in depression 225 in first layer of material 223 andassociating light source 208 with first electrode 238 and secondelectrode 240, laminate 226 may be placed over light source 208 andcured panel 279. Laminate 226 may take the form of second layer ofmaterial 224 in this illustrative example. Laminate 226 has lighttransmission properties 280. When embedded light source 206 isilluminated, the light must travel through laminate 226. In someillustrative examples, laminate 226 may take the form of either athermoset laminate or a thermoplastic laminate. Laminate 226 may atleast one of a resin, reinforcement, or additives. Additives may changeat least one of a physical property, an electrical property, a thermalproperty, or some other desirable property. In some illustrativeexamples, laminate 226 may include at least one of an epoxy, a phenolic,a polyurethane, a cyanate ester, a melamine, or other desirable type ofresin. In some illustrative examples, laminate 226 may take the form ofpolyvinyl fluoride 282. Laminate 226 may be adhered over embedded lightsource 206 and cured first composite layer 260 using pressure sensitiveadhesive 284 of number of adhesives 253.

In some illustrative examples, number of composite layers 205 mayinclude more than just first composite layer 260 and second compositelayer 262. In some illustrative examples, number of composite layers 205may include three composite layers. In other illustrative examples,number of composite layers 205 may include more than three compositelayers.

In some illustrative examples, multilayer panel 202 may also includecore 286. Core 286 may be referred to as a layer of core material. Inthese illustrative examples, number of layers 204 may include core 286.Core 286 may be formed of metal, composite, polymer, or any otherdesirable material.

In other illustrative examples, multilayer panel 202 may not includecore 286. In these illustrative examples, multilayer panel 202 may notbe substantially thicker than embedded light source 206 itself. Inillustrative examples in which multilayer panel 202 does not containcore 286, multilayer panel 202 may be referred to as a laminate. Whenmultilayer panel 202 does not include core 286, multilayer panel 202 maybe adhered to another multilayer panel which does contain a core. Forexample, multilayer panel 202 with embedded light source 206 may beapplied as a laminate over another composite panel.

Multilayer panel 202 may be interior panel 288 of aircraft 203. Interiorpanel 288 may be any desirable type of panel in the interior of aircraft203. Interior panel 288 may be part of ceiling 290, bulkhead 292, trim294, wall 296, or other desirable panels of the interior of aircraft203.

Multilayer panel 202 may be formed by processing assembly 207. Assembly207 includes first layer of material 223, first electrode 238, secondelectrode 240, and embedded light source 206. In some illustrativeexamples, first layer of material 223 in assembly 207 is cured. In theseillustrative examples, assembly 207 may include layup 263 after curing.Assembly 207 may also include other components that were not part oflayup 263. In one example, processing assembly 207 may include adheringsecond layer of material 224 over first layer of material 223. In thisexample, second layer of material 224 may take the form of laminate 226.In another example, processing assembly 207 may include adheringlaminate 226 to assembly 207. In this example, laminate 226 may beadhered over both first layer of material 223 and second layer ofmaterial 224, which are already cured.

In other illustrative examples, first layer of material 223 in assembly207 is uncured. In these illustrative examples, assembly 207 may takethe form of layup 263 prior to curing. In these illustrative examples,processing assembly 207 may include curing first layer of material 223of assembly 207.

Controller 297 may be in communication with light source 208. Controller297 may control the operation of light source 208. Controller 297 may beimplemented in software, hardware, firmware or a combination thereof.When software is used, the operations performed by controller 297 may beimplemented in program code configured to run on hardware, such as aprocessor unit. When firmware is used, the operations performed bycontroller 297 may be implemented in program code and data and stored inpersistent memory to run on a processor unit. When hardware is employed,the hardware may include circuits that operate to perform the operationsin controller 297.

In the illustrative examples, the hardware may take the form of acircuit system, an integrated circuit, an application specificintegrated circuit (ASIC), a programmable logic device, or some othersuitable type of hardware configured to perform a number of operations.With a programmable logic device, the device may be configured toperform the number of operations. The device may be reconfigured at alater time or may be permanently configured to perform the number ofoperations. Examples of programmable logic devices include, for example,a programmable logic array, a programmable array logic, a fieldprogrammable logic array, a field programmable gate array, and othersuitable hardware devices. Additionally, the processes may beimplemented in organic components integrated with inorganic componentsand may be comprised entirely of organic components excluding a humanbeing. For example, the processes may be implemented as circuits inorganic semiconductors.

In some illustrative examples, controller 297 may be located in acomputer system. The computer system includes one or more dataprocessing systems. When more than one data processing system ispresent, those data processing systems may be in communication with eachother using a communications medium such as a network. The dataprocessing systems may be selected from at least one of a computer, aserver computer, a tablet, a mobile phone, or some other suitable dataprocessing system.

Turning now to FIG. 3, an illustration of an exploded view of anembedded light source is depicted in accordance with an illustrativeexample. In this illustrative example, multilayer panel 300 includesnumber of layers 302, embedded light source 304, and number ofelectrodes 306. Multilayer panel 300 may be one physical example ofmultilayer panel 202 shown in block form in FIG. 2.

Number of layers 302 includes first layer of material 308 and secondlayer of material 310. In some illustrative examples, first layer ofmaterial 308 may be first composite layer 312. In some illustrativeexamples, second layer of material 310 may be second composite layer314. When at least one of first layer of material 308 or second layer ofmaterial 310 is made of composite, multilayer panel 300 may be referredto as a composite panel.

In some illustrative examples, second layer of material 310 may be alaminate. In these illustrative examples, second layer of material 310may be adhered over embedded light source 304 using a number ofadhesives.

Although, number of layers 302 is shown as only including two layers ofmaterial, any additional desirable number of layers may also be inmultilayer panel 300. For example, a number of additional layers may bepositioned adjacent to first layer of material 308. In some illustrativeexamples, these additional layers may be integrated into multilayerpanel 300 by at least one of co-curing or adhesives. For example, inco-curing, first layer of material 308 and the additional layers may becured together. In one illustrative example, multilayer panel 300 may beadhered as a decorative laminate over a separate multilayer panel. Inanother example, a number of additional layers may be positionedadjacent to second layer of material 310. These additional layers may beintegrated into multilayer panel 300 by at least one of co-curing oradhesives.

In one illustrative example, a core may be positioned relative to firstlayer of material 308. This core may be integrated into multilayer panel300 or may be a component of another multilayer panel.

Number of electrodes 306 is associated with first layer of material 308.In this illustrative example, number of electrodes 306 is formed ofconductive tape 316. At least one of first electrode 318 or secondelectrode 320 may be affixed to first layer of material 308. In someillustrative examples, at least one of first electrode 318 or secondelectrode 320 is free to move relative to first layer of material 308.

Embedded light source 304 is in electrical communication with firstelectrode 318 and second electrode 320. In some illustrative examples,embedded light source 304 may be adhered to at least one of firstelectrode 318 and second electrode 320. In some illustrative examples,embedded light source 304 may be adhered to at least one of firstelectrode 318 and second electrode 320 using at least one of solder,conductive paste, or other desirable bonds.

Turning now to FIG. 4, an illustration of a shim and a first layer ofmaterial is depicted in accordance with an illustrative example. FIG. 4may be a top view of a layup during forming of a multilayer panel. Layup400 includes number of electrodes 401. As depicted, number of electrodes401 is associated with first layer of material 402. In this illustrativeexample, number of electrodes 401 includes first electrode 404 andsecond electrode 406. Shim 408 is positioned relative to, and over,first electrode 404 and second electrode 406. After shim 408 ispositioned relative to, and over, first electrode 404 and secondelectrode 406, layup 400 may be processed. For example, when first layerof material 402 is a composite material, layup 400 may be processed suchthat first layer of material 402 is cured. During processing, shim 408may form a depression in layup 400. The size and shape of shim 408 maybe selected to form a depression having a desirable size, shape, anddepth. Shim 408 may have the approximate thickness of a display to beassociated with layup 400 after processing.

Turning now to FIG. 5, an illustration of a layup including a shim beinginserted into a press is depicted in accordance with an illustrativeexample. Layup 500 may be layup 400 of FIG. 4. In some illustrativeexamples, layup 500 may be a different layup, such as a layup having anumber of integrated electrodes. Layup 500 includes a shim (notdepicted). In some illustrative examples, layup 500 may includeprocessing caul sheets surrounding the number of layers of material tobe processed.

Layup 500 may be inserted into press 502. Press 502 may apply a desiredpressure and desired temperature to layup 500 to process layup 500. Insome illustrative examples, press 502 may apply a desired pressure anddesired temperature to cure composite layers in layup 500.

Turning now to FIG. 6, an illustration of a cured composite panel with adepression is depicted in accordance with an illustrative example. Curedcomposite panel 600 may be a depiction of layup 400 of FIG. 4 followingcuring. First layer of material 602 of cured composite panel 600 may bea cured composite material. Number of electrodes 604 of cured compositepanel 600 includes first electrode 606 and second electrode 608.

Cured composite panel 600 has depression 609. Depression 609 may be arecessed area of cured composite panel 600. Portion 610 of firstelectrode 606 may have a lower elevation than the remainder of firstelectrode 606 outside of depression 609. Portion 612 of second electrode608 may have a lower elevation than the remainder of second electrode608 outside of depression 609.

Depression 609 may be formed by placing a shim relative to first layerof material 602 prior to curing cured composite panel 600. After curing,the shim may be removed from cured composite panel 600 to formdepression 609. A shim may be selected to form a desirable shape, size,and depth of depression 609. Depression 609 may have a desirable shape,size, and depth for associating a light source with cured compositepanel 600 such that the light source is nearly flush or substantiallyflush with the surface of cured composite panel 600 outside ofdepression 609.

Turning now to FIG. 7, an illustration of a light source inserted into adepression in a cured composite panel is depicted in accordance with anillustrative example. As depicted, light source 700 has been inserted indepression 609 of cured composite panel 600 of FIG. 6. Light source 700is placed in electrical connection with first electrode 606 and secondelectrode 608. In some illustrative examples, light source 700 may beconnected to first electrode 606 and second electrode 608 using a bondsuch as solder, conductive paste, or any other desirable type of bond.

After associating light source 700 with first electrode 606 and secondelectrode 608, second layer of material 702 is adhered to first layer ofmaterial 602 and light source 700. In some illustrative examples, secondlayer of material 702 may be laminate 704. Laminate 704 may be adheredto first layer of material 602 and light source 700 using a number ofadhesives (not depicted). In some illustrative examples, the number ofadhesives (not depicted) may include a pressure sensitive adhesive. Byplacing laminate 704 over first layer of material 602 and light source700, cured composite panel 600, light source 700, and laminate 704 formmultilayer panel 706.

Turning now to FIG. 8, an illustration of an exploded view of oneimplementation of a layup with a light source is depicted in accordancewith an illustrative example. Layup 800 may be a physical implementationof layup 263 shown in block form in FIG. 2. After processing, layup 800will become a multilayer panel, such as multilayer panel 202 of FIG. 2.Layup 800 includes number of layers 802, number of processing materials804, number of electrodes 806, and light source 808. In this example,number of layers 802 includes core 809. Each of number of layers 802 maybe an adhesion promoter, a composite material, a resin, a polymer, ametal, a ceramic, a glass, or other desirable material. In thisillustrative example, number of processing materials 804 includes caulsheet 810, caul sheet 812, release material 814, release material 816,texture 818, and texture 820.

Texture 818 and texture 820 may apply a surface finish to layer 822 andlayer 824 of number of layers 802. In some illustrative examples,texture 818 and texture 820 may bond to layer 822 and layer 824 tobecome a portion of the final multilayer panel. Number of layers 802 mayalso include layer 826, first layer 828, second layer 830, and layer832. In some illustrative examples, first layer 828 and second layer 830may each be a composite material. First electrode 834 and secondelectrode 836 are associated with first layer 828. Light source 808 isin electrical communication with first electrode 834 and secondelectrode 836.

Turning now to FIG. 9, an illustration of an exploded view of oneimplementation of a layup with a light source is depicted in accordancewith an illustrative example. Layup 900 may be a physical implementationof layup 263 shown in block form in FIG. 2. After processing, layup 900will become a multilayer panel, such as multilayer panel 202 of FIG. 2.Layup 900 includes number of layers 902, number of processing materials904, number of electrodes 906, light source 908, and core 909. Each ofnumber of layers 902 may be a composite material, a resin, a polymer, orother desirable material. In this illustrative example, number ofprocessing materials 904 includes caul sheet 910, caul sheet 912,release material 914, release material 916, number of shims 917, andtexture 918. Number of shims 917 may be positioned between releasematerial 914 and release material 916. Number of shims 917 may control athickness of the resulting multilayer panel following processing oflayup 900.

Texture 918 may apply a surface finish to layer 920 of number of layers902. In some illustrative examples, texture 918 may bond to layer 920 tobecome a portion of the final multilayer panel. Number of layers 902 mayalso include layer 922, first layer 924, and second layer 926. In someillustrative examples, first layer 924 and second layer 926 may each bea composite material. First electrode 928 and second electrode 930 areassociated with first layer 924. Light source 908 is in electricalcommunication with first electrode 928 and second electrode 930.

Turning now to FIG. 10, an illustration of an embedded light source in amultilayer panel is depicted in accordance with an illustrative example.Multilayer panel 1000 may be a physical implementation of multilayerpanel 202 shown in block form in FIG. 2. Multilayer panel 1000 may beone of layup 800 or layup 900 after processing.

Multilayer panel 1000 has surface 1002. In this illustrative example,surface 1002 is substantially uniform. As illustrated, the embeddedlight source (not depicted) is not visible when the embedded lightsource is not illuminated. As depicted, there is substantially nomarkoff on surface 1002 from the embedded light source.

In some illustrative examples, multilayer panel 1000 may be an exampleof multilayer panel 706 after adhering second layer of material 702. Inthese illustrative examples, surface 1002 may have some amount ofmarkoff. In these illustrative examples, the embedded light source maybe identified as a result of this markoff.

Turning now to FIG. 11, an illustration of an illuminated embedded lightsource in a multilayer panel is depicted in accordance with anillustrative example. View 1100 may be a view of multilayer panel 1000of FIG. 10 when the embedded light source is illuminated. As can be seenin view 1100, light from the embedded light source shines throughsurface 1102. In some illustrative examples, the embedded light sourcemay be a dynamic display. In these illustrative examples, image 1104 maychange as desired. In other illustrative examples, the embedded lightsource may be a static display. In these illustrative examples, image1104 may be the same each time the embedded light source is illuminated.

Although image 1104 is depicted as a fasten seat belt image, image 1104may take any desirable form. Further, image 1104 as depicted does notlimit the use of multilayer panel 1000 to implementations in anaircraft. Multilayer panel 1000 need not be present in an aircraft.Multilayer panel 1000 may be present in any desirable type of platformsuch as a mobile platform, a stationary platform, a land-basedstructure, an aquatic-based structure, and a space-based structure. Morespecifically, the platform may be a surface ship, a tank, a personnelcarrier, a train, a spacecraft, a space station, a satellite, asubmarine, an automobile, and other suitable platforms.

In some illustrative examples, multilayer panel 1000 may be a standaloneproduct. Multilayer panel 1000 may be a display panel which may betransported from location to location by an operator. Multilayer panel1000 may be a component of any desirable mobile platform, stationaryplatform, or any desirable type of structure. For example, multilayerpanel 1000 may be a component of a display board, an easel, or othertype of display. In some illustrative examples, multilayer panel 1000may be used to form furniture, free-standing lighting fixtures, wiredlighting fixtures, or other desirable movable components.

In some illustrative examples, multilayer panel 1000 may be a componentof a school, a hospital, a museum, an exhibition hall, or any otherdesirable type of building. For example, multilayer panel 1000 may beused for a display or lighting. When not in use, the embedded lightsource may not be detectable. As a result, multilayer panel 1000 may beused to form walls, ceilings, partitions, or any desirable portion of abuilding.

Multilayer panel 1000 may be manufactured as an original component of aplatform. In some illustrative examples, multilayer panel 1000 may be areplacement or retrofitted component of a platform. For example, acomposite panel in aircraft 100 without an embedded light source may bereplaced with multilayer panel 1000. In some illustrative examples, allor a portion of a wall of a building may be replaced with multilayerpanel 1000.

Yet further, multilayer panel 1000 does not limit the size or shape ofpotential implementations of multilayer panel 1000. Multilayer panel1000 may be created in any desirable size or shape.

Turning now to FIG. 12, an illustration of a flowchart of a process forforming a multilayer panel with an embedded light source is depicted inaccordance with an illustrative example. Process 1200 may be used inmanufacturing environment 200 of FIG. 2 to form a multilayer panel withan embedded light source such as multilayer panel 202 with embeddedlight source 206 of FIG. 2.

The process begins by associating a first electrode and a secondelectrode with a first layer of material (operation 1202). In someillustrative examples, associating the first electrode and the secondelectrode with the first layer of material includes affixing only one ofthe first electrode or the second electrode to the first layer ofmaterial. Affixing only one of the first electrode or the secondelectrode to the first layer of the material comprises at least one ofadhering the only one of the first electrode or the second electrode tothe first layer of material, printing the only one of the firstelectrode or the second electrode onto the first layer of material, orintegrating conductive fibers into the first layer of material atselective locations to form the only one of the first electrode or thesecond electrode.

By affixing only one of the first electrode or the second electrode,inconsistencies may be reduced in the resulting multilayer panel. Forexample, by having only one of the first electrode and the secondelectrode affixed to the first layer of material, delamination in themultilayer panel may be reduced or prevented. In some illustrativeexamples, associating also includes positioning the other of the firstelectrode or the second electrode such that the other of the firstelectrode or the second electrode is free to move relative to the firstlayer of material.

The process then positions a light source in electrical communicationwith the first electrode and the second electrode (operation 1204). Insome illustrative examples, positioning the light source in electricalcommunication with the first electrode and the second electrode includesbonding the light source to at least one of the first electrode or thesecond electrode. Bonding may include at least one of solder orconductive paste.

The process may then process an assembly comprising the first layer ofmaterial, the first electrode, the second electrode, and the lightsource to form a multilayer panel with an embedded light source(operation 1206). Afterwards the process terminates.

In some illustrative examples, processing the assembly may includecuring the first layer of material. In some illustrative examples,processing the assembly may include applying a laminate over the firstlayer of material and the light source. In some illustrative examples,the multilayer panel with embedded light source formed comprises atleast one of cabin lighting, décor, advertising, emergency signage,emergency lighting, entertainment display, seat placards, or safetysignage in an aircraft.

The flowcharts and block diagrams in the different depicted examplesillustrate the architecture, functionality, and operation of somepossible implementations of apparatuses and methods in an illustrativeexample. In this regard, each block in the flowcharts or block diagramsmay represent a module, a segment, a function, and/or a portion of anoperation or step.

In some alternative implementations of an illustrative example, thefunction or functions noted in the blocks may occur out of the ordernoted in the figures. For example, in some cases, two blocks shown insuccession may be executed substantially concurrently, or the blocks maysometimes be performed in the reverse order, depending upon thefunctionality involved. Also, other blocks may be added in addition tothe illustrated blocks in a flowchart or block diagram.

For example, the process may further include applying a surfacetreatment to at least one of the light source or the first layer priorto processing the assembly panel. As another example, the process mayfurther include placing a second layer of material over the light sourceand the first layer of material. In some illustrative examples, thefirst layer of material and the second layer of material arepre-impregnated composite materials, and processing the assemblycomprises curing the assembly with at least one of applied heat orapplied pressure to form a cured panel.

In some illustrative examples, the second layer of material comprises amaterial that allows at least some light from the light source to travelthrough the second layer of material. In some illustrative examples,processing the assembly further comprises applying a laminate over thecured panel.

In another example, the process may further include curing the firstlayer of material to form a cured panel after associating the firstelectrode and the second electrode with the first layer of material,wherein the light source is positioned in electrical communication withthe first electrode and the second electrode on the cured panel, andwherein processing the multilayer panel comprises applying a laminateover the light source and the cured panel to form the multilayer panelwith the embedded light source.

In one example, the process further includes associating a shim havingthe approximate thickness of the light source with the first layer ofmaterial. The shim may be used to form a depression during processing ofthe multilayer panel.

The illustrative examples of the disclosure may be described in thecontext of aircraft manufacturing and service method 1300 as shown inFIG. 13 and aircraft 1400 as shown in FIG. 14. Turning first to FIG. 13,a block diagram of an aircraft manufacturing and service method isdepicted in accordance with an illustrative example. Duringpre-production, aircraft manufacturing and service method 1300 mayinclude specification and design 1302 of aircraft 1400 of FIG. 14 andmaterial procurement 1304.

During production, component and subassembly manufacturing 1306 andsystem integration 1308 of aircraft 1400 of FIG. 14 takes place.Thereafter, aircraft 1400 of FIG. 14 may go through certification anddelivery 1310 in order to be placed in service 1312. While in service1312 by a customer, aircraft 1400 of FIG. 14 is scheduled for routinemaintenance and service 1314, which may include modification,reconfiguration, refurbishment, and other maintenance or service.

Each of the processes of aircraft manufacturing and service method 1300may be performed or carried out by a system integrator, a third party,and/or an operator. In these examples, the operator may be a customer.For the purposes of this description, a system integrator may include,without limitation, any number of aircraft manufacturers andmajor-system subcontractors; a third party may include, withoutlimitation, any number of vendors, subcontractors, and suppliers; and anoperator may be an airline, a leasing company, a military entity, aservice organization, and so on.

With reference now to FIG. 14, a block diagram of an aircraft isdepicted in which an illustrative example may be implemented. In thisexample, aircraft 1400 is produced by aircraft manufacturing and servicemethod 1300 of FIG. 13 and may include airframe 1402 with plurality ofsystems 1404 and interior 1406. Examples of systems 1404 include one ormore of propulsion system 1408, electrical system 1410, hydraulic system1412, and environmental system 1414. Any number of other systems may beincluded. Although an aerospace example is shown, different illustrativeexamples may be applied to other industries, such as the automotiveindustry. Apparatuses and methods embodied herein may be employed duringat least one of the stages of aircraft manufacturing and service method1300 of FIG. 13.

One or more illustrative examples may be used during manufacturing andservice method 1300 of FIG. 13. For example, multilayer panel 202 havingembedded light source 206 of FIG. 2 may be formed during component andsubassembly manufacturing 1306. Further, multilayer panel 202 havingembedded light source 206 of FIG. 2 may be inserted to replace a displayin an aircraft during maintenance and service 1314.

The illustrative examples present methods of forming embedded lightsources in multilayer panels. By embedding a light source, such as anorganic light emitting diode, in a composite panel, at least one ofweight, bulk, or connection complexity may be decreased for pre-existingdisplay locations. For example, brackets and mounting equipment may notbe used with embedded light sources in multilayer panels. By eliminatingbrackets and mounting equipment in select locations, the weight of anaircraft may be reduced. Reduction in aircraft weight may contribute toa reduction in costs.

Further, embedded light sources in multilayer panels may be used insteadof conventionally unilluminated displays in some areas. Yet further, thenumber of displays in an aircraft may be reduced if embedded lightsources are programmable displays. For example, the number of displaysin an aircraft may be reduced if embedded light sources are capable ofdisplaying multiple images in individual conventional displays.

By embedding light sources into multilayer panels, the number ofmanufacturing steps in an aircraft may be reduced. For example, holes toinstall brackets and mounting equipment for displays may not be used. Asa result, these manufacturing steps may be eliminated. By eliminating orreducing steps of manufacturing, at least one of manufacturing time ormanufacturing cost may also be reduced.

The description of the different illustrative examples has beenpresented for purposes of illustration and description, and is notintended to be exhaustive or limited to the examples in the formdisclosed. Many modifications and variations will be apparent to thoseof ordinary skill in the art. Further, different illustrative examplesmay provide different features as compared to other illustrativeexamples. The example or examples selected are chosen and described inorder to best explain the principles of the examples, the practicalapplication, and to enable others of ordinary skill in the art tounderstand the disclosure for various examples with variousmodifications as are suited to the particular use contemplated.

What is claimed is:
 1. A multilayer panel with an embedded light sourcecomprising: a first layer of composite material; a second layer ofcomposite material; a first electrode associated with the first layer ofcomposite material and positioned between the first layer of compositematerial and the second layer of composite material; a second electrodeassociated with the first layer of composite material and positionedbetween the first layer of composite material and the second layer ofcomposite material; a depression formed in the first layer of compositematerial, wherein the first electrode and the second electrode eachcontinuously extend from a first edge of the first layer of compositematerial, through the depression, and to a second edge of the firstlayer of composite material; a light source in electrical communicationwith the first electrode and the second electrode, wherein the lightsource is positioned on the first electrode and the second electrodewithin the depression; and the second layer of material overlying thefirst layer of composite material, the light source, and a portion ofthe first layer of composite material extending beyond the depression;wherein the first electrode or the second electrode is free to moverelative to the first layer of composite material.
 2. The multilayerpanel of claim 1, wherein the second layer of material is a laminatelayer and wherein the light source is not detectable within themultilayer panel when the light source is not illuminated.
 3. Themultilayer panel of claim 1 further comprising: a conductive adhesivepositioned between at least one of the first electrode or the secondelectrode and the light source.
 4. The multilayer panel of claim 1further comprising: a layer of core material.
 5. The multilayer panel ofclaim 1, wherein the second layer is a pre-impregnated compositematerial.
 6. The multilayer panel of claim 1, wherein the multilayerpanel has a non-planar curvature.
 7. The multilayer panel of claim 1,wherein the light source is a static image flexible organic lightemitting diode.
 8. The multilayer panel of claim 1, wherein the lightsource is a programmable flexible organic light emitting diode.
 9. Themultilayer panel of claim 1, wherein the multilayer panel comprises adisplay or lighting in an aircraft.
 10. The multilayer panel of claim 9,wherein the multilayer panel comprises at least one of cabin lighting,décor, advertising, emergency signage, emergency lighting, entertainmentdisplay, seat placards, or safety signage.
 11. The multilayer panel ofclaim 1, wherein the first electrode and the second electrode each havea portion positioned within the depression and another portion extendingoutside of the depression.
 12. The multilayer panel of claim 1, whereina portion of the first electrode positioned within the depression has anelevation different from another portion of the first electrode outsideof the depression.
 13. The multilayer panel of claim 1, wherein thefirst electrode or the second electrode is formed of conductive tapeaffixed to the first layer of composite material.
 14. The multilayerpanel of claim 1, wherein the first electrode or the second electrode isformed of conductive material integrated within the first layer ofcomposite material.
 15. The multilayer panel of claim 1, wherein a size,a shape, and a thickness of the depression corresponds to a size, ashape, and a thickness of the light source such that the light sourcefills the depression and is flush with a surface of the first compositelayer outside of the depression.
 16. An aircraft comprising: amultilayer panel with an embedded light source comprising a firstelectrode associated with a first layer of composite material, a secondelectrode associated with the first layer of composite material, adepression formed in the first layer of composite material, wherein thefirst electrode and the second electrode each continuously extend from afirst edge of the first layer of composite material, through thedepression, and to a second edge of the first layer of compositematerial, wherein the first electrode or the second electrode is free tomove relative to the first layer of composite material, a light sourcein electrical communication with the first electrode and the secondelectrode and positioned on the first electrode and the second electrodewithin the depression, and a second layer of material overlying thefirst layer of composite material, the light source, and a portion ofthe first layer of composite material extending beyond the depression;and a controller in communication with the light source.
 17. Theaircraft of claim 16, wherein the multilayer panel comprises at leastone of cabin lighting, décor, advertising, emergency signage, emergencylighting, entertainment display, seat placards, or safety signage.
 18. Amultilayer panel with an embedded light source comprising: a first layerof composite material; a depression formed in the first layer ofcomposite material; a light source positioned on a first electrode and asecond electrode within the depression and relative to the first layerof composite material, wherein the first electrode and the secondelectrode each continuously extend from a first edge of the first layerof composite material, through the depression, and to a second edge ofthe first layer of composite material opposite the first edge of thefirst layer of composite material; and a second layer of compositematerial overlying the first layer of composite material, the lightsource, and a portion of the first layer of composite material extendingbeyond the depression; wherein the first electrode or the secondelectrode is free to move relative to the first layer of compositematerial.
 19. The multilayer panel of claim 18, wherein the multilayerpanel comprises a display or lighting in an aircraft.
 20. The multilayerpanel of claim 19, wherein the multilayer panel comprises at least oneof cabin lighting, décor, advertising, emergency signage, emergencylighting, entertainment display, seat placards, or safety signage. 21.The multilayer panel of claim 18, wherein the first electrode and thesecond electrode each have a portion positioned within the depressionand another portion extending outside of the depression.